realistic velocities for .223 88 eld?

[mpwolf]

Got a 21" 1-7" .223 barrel coming for the Tikka. The idea is to feed it 88's and kill stuff. Up until now, I've been shooting 75 amax over Lever out of a stock 1-8" Tikka tube, at 2900. I haven't messed with anything heavier in the .223 before, so I really don't know what sort of velocity I should be looking for. Maybe 2650-2700?

 

[seand]

Hornady has data for 5.56, 20” barrel. I’d figure 2725 ish for max with varget.

 

[Pharmseller]

What are you gonna shoot with an 88 that wouldn’t die with a 75?




P

 

[Steve300xcw]

been shooting 75 amax over Lever out of a stock 1-8" Tikka tube, at 2900.

That was already a pretty solid place to be

 

[ACHILLES]

I’d say your estimate of 2650-2700 out of a 21” 223rem with lever is spot on.

 

[mpwolf]

we shall see. I like how Lever meters, but I might try some H4895 to see if how it does, while being more temp stable.

 

[ACHILLES]

If you don’t already have one You will probably need a mag that offers a longer coal than factory to get the 88s seated far enough out to get enough powder in the case. Along with a lot of freebore.

 

[mpwolf]

If you don’t already have one You will probably need a mag that offers a longer coal than factory to get the 88s seated far enough out to get enough powder in the case. Along with a lot of freebore.

yup, got that covered

 

[jzeblaz]

yup, got that covered

Waters?

 

[mpwolf]

Mountain Tactical.

 

[Packmansion]

I'm trying to execute a similar project please keep us updated.

 

[mpwolf]

Ran a pressure test today. Virgin Lapua brass, 450 primers, H4895. Bullets were all seated 0.050 off. Just one round per powder charge, with the idea of seeing where things pressured out. I was pretty surprised at what I found. Gotta be careful with the Tikka- it handles pressure way better than the 700s I've messed with. No way I'm going to be running things this hot, but the cases look good.

 

[wind gypsy]

Those are some big #s. How much freebore does the chamber have?

 

[mpwolf]

I agree- the numbers are stupid. I don’t know what the actual freebore is, but it’s not as much as I would prefer for these bullets, to be honest. I really just ran the test to see how the bullets would go. Now I see I can drive them faster than I should! The question is, what’s reasonable?

 

[Packmansion]

I agree- the numbers are stupid. I don’t know what the actual freebore is, but it’s not as much as I would prefer for these bullets, to be honest. I really just ran the test to see how the bullets would go. Now I see I can drive them faster than I should! The question is, what’s reasonable?

Youre a good 3 grains over Hornady book max

 

[35WhelenAI]

Op, you said it, the numbers are stupid. Pressure is way high. I'm not sure why there's any need to post, it's a classic case of needing to reduce the charge. I don't understand running a ladder that goes over a book max, even when comparing a number of loading manuals and data. It's been said many times. If you need more velocity, get a bigger case and run a safe pressure. And you don't need to hear it here, it's anywhere on the internet unless folks are just ignoring physics.

 

[T28w]

So where do you plan on running it 24ish grains?